The present invention relates to a cutting tool (2) for a harvester, preferably a baler and / or a loading trailer, comprising at least one blade (3) mounted on a blade holder (4) and held in a position for cutting, with penetration into a harvested product channel (8), the blade holder (4) being movably mounted between a working position and an inactive position in which the blade (3) is outside the channel ( 8) harvested product. The blade (3) is movably mounted on the blade holder (4) so that, when the blade holder (4) is in the working position, the blade (3) can be brought from its cutting position to a avoidance and / or non-cutting position. A prestressed biasing device (9) is assigned to the blade (3) for returning the blade (3) to its cutting position from the avoidance position and / or the non-cutting position. . Retaining means (10) are assigned to the blade (3) to retain it in its avoidance and / or non-cutting position with respect to the blade holder (4), and means for deactivation (11) are assigned to the return device (9), in order to suppress or decrease the restoring force. In addition, the blade (3) can be mounted on the blade holder (4) with translatory sliding ability, and pivotal ability. The flexibly translational offset component then allows a disengagement with an approximately constant disengagement force, at least at the beginning of the flexible offset movement, regardless of the point of impact of a foreign object.La présente invention concerne un outil de coupe (2) pour récolteuse, de préférence une presse à balles et/ou une remorque de chargement, comprenant au moins une lame (3) montée sur un porte-lames (4) et maintenue dans une position de coupe, avec pénétration dans un canal (8) à produit récolté, le porte-lames (4) étant monté mobile entre une position de travail et une position inactive dans laquelle la lame (3) se trouve à l'extérieur du canal (8) à produit récolté. La lame (3) est montée mobile sur le porte-lames (4) de façon